In one heated moment, Brzezinski asked Greenwald if the Obama
administration was doing anything illegal.

"Quickly, I just want an answer, yes or no, isn't it the
case that reviewing of emails or any wiretapping cannot take
place without an additional warrant from a judge and a review?"
Brzezinski said. "I mean, it's not like there’s haphazard probing
into all of our personal emails. Can we put this into context so
we understand exactly what's going on?"

Greenwald accused her of using "White House talking
points."

"Yeah, I'll put it into context for you," he said. "The
White House talking points that you're using are completely
misleading and false."

The only time the government needs a warrant for
surveillance, Greenwald said, is when the person is inside the
United States.

"Under that law, the U.S. government and the NSA have the
power and exercise the power to listen in on telephone
conversations and read emails involving all kinds of American
citizens. ... So, those talking points that you're reading are
false —"

"Hey, Glenn, no," Brzezinski said, interjecting. "I'm
not reading talking points. Glenn, I'd like to ask a question, is
this legal or illegal? Or Richard Haass, can you help me out
here, since Glenn doesn't want to answer the question. Is the law
being broken here?

"I questioned the law. I questioned all the issues that
this raises. I'm personally concerned as well. But I'd like to
put this in perspective. Is the law being broken?"

Later, Brzezinski and co-host Joe Scarborough said
Greenwald got "testy" with her, which Scarborough said in jest
"shocked and stunned" him.